diff --git a/Cargo.lock b/Cargo.lock
index e229448df04..1cc49efbac8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1736,7 +1736,7 @@ checksum = "5b31c9b90731276fdd24d896f31bb10aecf2e5151733364ae81123186643d939"
 dependencies = [
  "jsonrpc-core",
  "log",
- "parking_lot 0.10.0",
+ "parking_lot 0.10.2",
  "serde",
 ]
 
@@ -1855,9 +1855,9 @@ checksum = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
 
 [[package]]
 name = "lock_api"
-version = "0.3.1"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8912e782533a93a167888781b836336a6ca5da6175c05944c86cf28c31104dc"
+checksum = "c4da24a77a3d8a6d4862d95f72e6fdb9c09a643ecdb402d754004a557f2bec75"
 dependencies = [
  "scopeguard",
 ]
@@ -2395,12 +2395,12 @@ dependencies = [
 
 [[package]]
 name = "parking_lot"
-version = "0.10.0"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92e98c49ab0b7ce5b222f2cc9193fc4efe11c6d0bd4f648e374684a6857b1cfc"
+checksum = "d3a704eb390aafdc107b0e392f56a82b668e3a71366993b5340f5833fd62505e"
 dependencies = [
  "lock_api",
- "parking_lot_core 0.7.0",
+ "parking_lot_core 0.7.1",
 ]
 
 [[package]]
@@ -2420,9 +2420,9 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7582838484df45743c8434fbff785e8edf260c28748353d44bc0da32e0ceabf1"
+checksum = "0e136c1904604defe99ce5fd71a28d473fa60a12255d511aa78a9ddf11237aeb"
 dependencies = [
  "cfg-if",
  "cloudabi",
@@ -3240,7 +3240,7 @@ dependencies = [
  "lazy_static 1.4.0",
  "log",
  "measureme",
- "parking_lot 0.10.0",
+ "parking_lot 0.10.2",
  "rustc-ap-graphviz",
  "rustc-ap-rustc_index",
  "rustc-ap-serialize",
@@ -3686,7 +3686,7 @@ dependencies = [
  "libc",
  "log",
  "measureme",
- "parking_lot 0.10.0",
+ "parking_lot 0.10.2",
  "rustc-hash",
  "rustc-rayon",
  "rustc-rayon-core",
@@ -3984,7 +3984,7 @@ dependencies = [
  "jobserver",
  "log",
  "measureme",
- "parking_lot 0.10.0",
+ "parking_lot 0.10.2",
  "polonius-engine",
  "rustc-rayon",
  "rustc-rayon-core",
@@ -4133,7 +4133,7 @@ name = "rustc_query_system"
 version = "0.0.0"
 dependencies = [
  "log",
- "parking_lot 0.9.0",
+ "parking_lot 0.10.2",
  "rustc-rayon-core",
  "rustc_data_structures",
  "rustc_errors",
diff --git a/src/librustc_query_system/Cargo.toml b/src/librustc_query_system/Cargo.toml
index e1657a8f3c6..7520da1f32b 100644
--- a/src/librustc_query_system/Cargo.toml
+++ b/src/librustc_query_system/Cargo.toml
@@ -18,5 +18,5 @@ rustc_index = { path = "../librustc_index" }
 rustc_macros = { path = "../librustc_macros" }
 rustc_serialize = { path = "../libserialize", package = "serialize" }
 rustc_span = { path = "../librustc_span" }
-parking_lot = "0.9"
+parking_lot = "0.10"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }